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Viral marketing and viral advertising is a marketing technique that uses social media to increase brand awareness and drive sales. No one asks for anything, no one hires. If users liked the advertising message, they, on their own initiative, begin to send it to their buddy friends. It can be text, rumor, video, image, game, e-book, program. The process, which in Russian has long been called "word of mouth", is similar to the spread of computer or common viruses: one infected two, each infected is still a couple, etc.
It is believed that a client who is satisfied with the product or service will tell about this to about three of his acquaintances, and if he did not like the product or service, then about ten. Viral marketing is built on this very mechanism of human behavior.
The goal of a viral marketer is to detect people who have Social Networking Potential, and create a viral message that is oriented to this type, and therefore with a high probability of relaying.